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SwiftData ​

SwiftData with iOS 26+ features, @Model definitions, @Query patterns, Swift 6 concurrency with @MainActor.

When to use: Working with SwiftData @Model definitions, @Query in SwiftUI, @Relationship macros, ModelContext patterns, CloudKit integration, iOS 26+ features, Swift 6 concurrency

Key Features ​

  • @Model definitions
  • @Query patterns in SwiftUI
  • @Relationship macros
  • ModelContext patterns
  • CloudKit integration
  • iOS 26+ features
  • Swift 6 concurrency with @MainActor

Example Prompts ​

These are real questions developers ask that this skill answers:

  • "I have a notes app with folders. How do I filter notes by folder and sort by last modified?" → Shows how to use @Query with predicates, sorting, and automatic view updates

  • "When a user deletes a task list, all tasks should auto-delete too." → Explains @Relationship with deleteRule: .cascade and inverse relationships

  • "My chat app syncs to other devices via CloudKit. Sometimes messages conflict." → Covers CloudKit integration, conflict resolution strategies, and sync patterns

  • "I have relationships between User → Messages → Attachments. How do I prevent orphaned data?" → Shows cascading deletes, inverse relationships, and safe deletion patterns

  • "I need to query 50,000 messages but only display 20 at a time." → Covers performance patterns, batch fetching, and limiting queries efficiently